Subtract 49/54 from 7/20
7/20 - 49/54 is -301/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 54 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
7/20 = 7 × 27/20 × 27 = 189/540 - Likewise, for the 2nd fraction, since 54 × 10 = 540,
49/54 = 49 × 10/54 × 10 = 490/540 - Subtract the two like fractions:
189/540 - 490/540 = 189 - 490/540 = -301/540
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